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In Minnesota, wastewater treatment operators must be certified to ensure that facilities meet operational requirements.

Protecting and restoring water quality is one of the MPCA's core areas of focus.

Financing is available for public entities in Minnesota to expand or improve stormwater infrastructure.

Trichloroethylene and perchloroethylene have contaminated groundwater and caused vapor intrusion issues at this site.

Create an editable spreadsheet of details about your facility to make calculations of emissions.

Chloride is a problem for wastewater facilities and stormwater permittees.

Solid waste facilities may close or terminate their permit depending on the solid waste activities occurring at the site.

Learn what you can do to protect yourself and your community from environmental problems caused by flooding.

The MPCA completed 78 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the second half of 2025, for a total of 146 for the year.

A training and certification program for evaluating aquatic life in Minnesota’s rivers and streams.

Water quality trading is a market-based approach to the protection and restoration of surface waters, another tool to be used in conjunction with existing voluntary, regulatory, and financial assistance programs.

The northeast region of Minnesota is home to the state’s metallic mining industry. The "Iron Range" has a history of iron ore (“ferrous”) mining dating back to the late 1800s and includes the large…

Where possible, permit holders must use MPCA's e-Services to apply for reissuance and administrative amendments.

Wastewater treatment and disposal are important for protecting and preserving Minnesota's water resources. MPCA regulates wastewater treatment activities in Minnesota.

Green and safer product chemistry is formulating or designing a new product (or reformulating an existing one) to reduce harmful environmental, workplace, human health, and energy use effects over the product's entire life cycle.

The MPCA has announced 13 grant recipients that will receive a total of nearly $4.8 million for projects that will keep good food from going to waste in Minnesota while diverting usable food to people in need.

The MPCA completed 75 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the second half of 2024.

Robyn Dwight is the 2024 winner of the Community Conservationist Award given by the Minnesota Association of Soil and Water Conservation Districts and MPCA. She helped expand Keep It Clean, which keeps garbage off lake ice.

A series of new culverts in Lake County reconnect brook trout habitat and provide resilience to climate change for area roads.

A recent $1 million MPCA grant round will fund projects focused on waste reduction and reuse. To invest in projects that will continue to offer benefits to Minnesotans well into the future, this grant round prioritized proposals that would replace single-use items with reusables or help build a trained repair workforce in Minnesota.